differential count

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differential count

Diff, white blood cell differential count Hematology The relative number of leukocytes–eg segmented and band forms of granulocytes, eosinophils, lymphocytes and monocytes in the peripheral circulation, expressed in percentages of the total WBC count. See White cell count.


a numerical computation or indication.

differential count
a count, on a stained blood smear, of the proportion of different types of leukocytes (or other cells), previously expressed in percentages but now usually reported in absolute numbers (109/l) for a better indication of abnormalities that may exist.
milk cell count
platelet count
the count of the total number of platelets per liter (109/l) of blood by counting the platelets in a counting chamber, a hematology analyzer, or by estimating the number on a stained blood smear.
sperm count
see semen concentration.
total bacterial count
determination of the total number of bacteria in the sample examined microscopically, then a calculation of the number per ml. These do not distinguish between viable and non-viable organisms. See also breed's direct smear method.
viable bacterial cell count
enumerating the number of viable bacteria present in a sample based on counting the number of colonies from a given dilution.
wool count
an arbitrary number given to wool to indicate its fiber diameter, e.g. 60's, based on an eyeball assessment of the number of hanks of yarn that could be spun from one pound of wool. Now superseded by measurement of the diameter, e.g. 20 microns.
worm count
a total worm count requires a freshly slaughtered cadaver, collection of intestinal or other fluid in an aliquot sample; in the case of lungs it is necessary to digest the tissue; counting actual worms and by multiplication measuring the total worm burden.
References in periodicals archive ?
The pattern of WBC and differential counts were not different between groups, but addition of the covariate of infection showed group differences (p = .
A combination of cell size, myeloperoxidase staining and nuclear lobulation was used to perform the total leucocyte and 6-part differential count.
Abstract: The avian hemogram is usually performed in veterinary diagnostic laboratories by using manual cell counting techniques and differential counts determined by light microscopy.
The manual scan rate increased with a greater number of hospital beds, but the manual leukocyte differential count rate decreased.
Neither blood biochemical parameters nor differential count of white blood cells was affected by dietary inclusion of EO, except for monocyte count which was higher in fennel-included compared to ginger-included and control dietary group.
3], with a differential count of 1% neutrophils, 77% lymphocytes, and 18% macrophages.
In hematology analyzers without this technology, the VCS technology was used primarily for generating the differential count.
The CellaVision DM1200 opens up new ways of handling manual differentials traditionally performed on a microscope by automatically performing a preliminary differential count on peripheral blood.
The slides made from the Cytospin were Wright stained and a manual differential count was performed on each slide using 100 x oil immersion (for a total magnification of 1000 fold).
Samples were examined for the following parameters: total white blood cell count (WBC) and 5-part automated differential count, red blood cell count (RBC), haemoglobin (HGB), haematocrit (HCT), mean cell volume (MCV), mean cell haemoglobin (MCH), mean cell haemoglobin concentration (MCHC), RDW, platelet count (PLT) and MPV.
Anderson and his associates developed a risk model that used seven measures from the CBC; hematocrit, red-cell distribution width, mean corpuscular-hemoglobin concentration, mean corpuscular volume, platelet count, white cell count, and white-cell differential count.

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